From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Philip Kaludercic Newsgroups: gmane.emacs.bugs Subject: bug#69387: 30.0.50; A string shouldn't be both a docstring and a return value Date: Mon, 26 Feb 2024 14:47:28 +0000 Message-ID: <87le77b7un.fsf@posteo.net> References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31321"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 69387@debbugs.gnu.org, Stefan Monnier To: Eshel Yaron Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Feb 26 15:48:55 2024 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1recHn-0007va-Ho for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 26 Feb 2024 15:48:55 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1recHX-0007xa-TK; 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Mon, 26 Feb 2024 15:47:28 +0100 (CET) In-Reply-To: (Eshel Yaron's message of "Sun, 25 Feb 2024 18:33:08 +0100") OpenPGP: id=7126E1DE2F0CE35C770BED01F2C3CC513DB89F66; url="https://keys.openpgp.org/vks/v1/by-fingerprint/7126E1DE2F0CE35C770BED01F2C3CC513DB89F66"; preference=signencrypt X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:280671 Archived-At: Eshel Yaron writes: > Hi Stefan, > > Stefan Monnier writes: > >> Package: Emacs >> Version: 30.0.50 >> >> >> Currently, ELisp defines >> >> (lambda (blabla) "Help!") >> >> as a function that returns "Help!" *and* whose docstring is "Help!". >> As seen in commit eeb89a5cb292bffe40ba7d0b0cf81f82f8452bf8, it can be >> a source of annoyance as well. >> >> I cannot remember finding source code which makes use of this "feature". > > vc-mode kind of abuses of this feature: > > (defun vc-mode (&optional _arg) > ;; Dummy function for C-h m > "Version Control minor mode. > This minor mode is automatically activated whenever you visit a file under > control of one of the revision control systems in `vc-handled-backends'. > VC commands are globally reachable under the prefix \\[vc-prefix-map]: > \\{vc-prefix-map}") But cases like these can be easily resolved, e.g. just by adding a nil to the end of the body. > Here the assumption is that the string is used as a doc string, which > indeed leads to unexpected results, see Bug#65092. > > > Best, > > Eshel > > > > -- Philip Kaludercic on peregrine